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Cathodic Protection

Presentation on Cathodic Protection System, at IOCL KBPL Kandla. Dt. 19.04.2006. By Corrosion Matters Hyderabad An Advisory services company. Cathodic Protection. Welcome. CORROSION. “The deterioration of a material, usually a metal, that results from a reaction with its environment.”.

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Cathodic Protection

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  1. Presentation on Cathodic Protection System, at IOCL KBPL Kandla. Dt. 19.04.2006 By Corrosion Matters Hyderabad An Advisory services company. Cathodic Protection

  2. Welcome

  3. CORROSION “The deterioration of a material, usually a metal, that results from a reaction with its environment.”

  4. TYPICAL CORROSION CELL

  5. FORMS OF CORROSION

  6. pH OXYGEN RESISTIVITY TEMPERATURE COATING PROPERTIES ELECTROLYTE MOISTURE CONTENT ANODE MATERIAL ANODE LOCATION ANODE SIZE ANODE SHAPE STRUCTURE MATERIAL BACTERIA OTHER MINERALS IN ELECTROLYTE SOME VARIABLES IN THE CORROSION CONTROL PROCESS

  7. CORROSION CONTROL MEASURES • MATERIALS SELECTION • DESIGN CONSIDERATIONS • PROTECTIVE COATINGS AND LININGS • CATHODIC PROTECTION • INHIBITORS

  8. BASIC CATHODIC PROTECTION

  9. BASIC CATHODIC PROTECTION II

  10. SOME CP DESIGN CONSIDERATIONS • ELECTROLYTE RESISTIVITY • SYSTEM LIFE REQUIREMENTS • COATING EFFICIENCY • CURRENT REQUIRED FOR PROTECTION • ECONOMIC FACTORS • PHYSICAL CONFIGURATION OF STRUCTURE • MATERIALS USED IN STRUCTURE. • ANODE CHARACTERISTICS

  11. CP CONSTRUCTION CONSIDERATIONS • PREPARATION OF METAL SURFACE FOR COATING • PROPER SELECTION AND APPLICATION OF COATING • PROCUREMENT OF CP EQUIPMENT MEETING SPECIFICATIONS • SUPERVISION OF INSTALLATION BY QUALIFIED PERSONNEL • ENERGIZING, ADJUSTMENT, AND TESTING BY QUALIFIED PERSONNEL

  12. MAINTENANCE AND REPAIR CONSIDERATIONS • WEEKLY RECTIFIER READINGS RECORDED AND SENT TO DISTRICT CP SPECIALIST FOR REVIEW • ANNUAL PROTECTIVE POTENTIAL SURVEY PERFORMED BY QUALIFIED PERSONNEL • NECESSARY SYSTEM ADJUSTMENTS MADE BY QUALIFIED PERSONNEL • NECESSARY REPAIRS MADE AS SOON AS POSSIBLE AND RETEST IF NECESSARY

  13. SUMMARY • THERE ARE MANY FORMS AND MECHANISMS THAT CAUSE CORROSION. • PROPER CORROSION CONTROL SAVES MONEY, AND IMPROVES OPERABILITY AND SAFETY AND PROTECTS THE ENVIRONMENT. • CATHODIC PROTECTION IS A PROVEN EFFECTIVE METHOD OF CORROSION CONTROL. • CORROSION CONTROL IS COMPLEX, REQUIRING SPECIAL EXPERTISE FOR SUCCESSFUL DESIGN, CONSTRUCTION, AND MAINTENANCE

  14. Sketch for CP System

  15. CP System for Existing Buried Lines

  16. CP Station for Pipelines

  17. Anode Junction Box

  18. Deepwell Anode Groundbed

  19. Indoor Type Rectifier

  20. Outdoor Type Rectifier

  21. Hi Silicon Chromium Anodes

  22. Titanium Rod Type Anode

  23. Sacrificial Anode - Mg

  24. Mg. Anodes with tail cables

  25. Bullet Tanks CP System

  26. Measurement of Potentials

  27. Railcrossings CP System

  28. Survey for Stray current CP

  29. Graphical presentation of Data

  30. Pourbix Diagram for Corrosion Phenomenon

  31. Temporary System for Current Requirement

  32. End. Thank You We also make Electro Chlorination Systems

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